RKL4577 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4577 is part of the RKL Motor Power Cables series and features a PUR jacket that is adhesion-free and matte. This cable supports a power wire cross-section of 16.0 mm² and a rated voltage of 600 V AC. Its bending radius is 5 times diameter for fixed installation and 7.5 times diameter for flexible use, with a maximum wire temperature of 90°C when fixed and 80°C when flexible.
Internal Product Review
The RKL4577 is a robust motor power cable from Bosch Rexroth Indramat, designed for drag chain applications and featuring a PUR jacket that is adhesion-free and matte for durability and flexibility. With a power wire cross-section of 16.0 mm² and a rated voltage of 600 V AC, this cable provides excellent power transmission for demanding environments. Its reliable construction and drag chain rating make it a strong choice for continuous motion operations.
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Product Description:
The RKL4577 motor power cable is produced by Bosch Rexroth Indramat and belongs to the RKL Motor Power Cables series. It serves as the dedicated power link between a drive controller and its motor, carrying three-phase current while withstanding continuous motion typical of industrial robots, gantries, and linear modules.
The cable’s outer sheath measures 25.5 mm in diameter, so routing space inside control cabinets and drag chains can be calculated precisely. Each power core uses a cross-section of 16.0 mm², giving a current-carrying capacity appropriate for medium-power servo axes supplied at up to 600 V AC. Copper resistance is limited to 1.21 Ω/km at 20 °C; this low value restricts voltage drop over long cable runs. Mutual capacitance is specified at 1.2 nF/m, a figure that influences drive-side output filters and helps prevent excessive reactive current. The matte PUR jacket resists oils and coolants, remains adhesion-free, and is suited for drag-chain use, allowing millions of cycles without surface cracking or sheath creep.
Mechanical flexibility is defined by a fixed-installation bend limit of 5 x D and a dynamic bend limit of 7.5 x D; these ratios set the minimum arc radius during wiring and during continuous chain travel. The conductor insulation tolerates up to +90 °C in stationary routing, while moving sections are limited to +80 °C to avoid premature aging under cyclic stress. Safe deployment in unheated production halls or outdoor handling units is possible down to -20 °C during motion. These mechanical and thermal margins, together with the PUR sheath, allow the RKL4577 to maintain stable electrical parameters throughout accelerated, torsion-free motion paths.
